Telephone system



J1me 8 1926.

R. C. M. HASTINGS TELEPHONE SYSTEM Originl Filed July 5, 1920 5 Sheets-Sheet INVENTQR. S

19720 5 Sheets-Sheet 2 A TTORNEY.

June 8 1926.

R. C. M. HASTINGS TELEPHONE SYSTEM Original Filed July {5,

June 8 {1926.

R. C. M. HASTINGS TELEPHONE SYSTEM Original Filed July 3, 1920 5 sh t s f n m H 2 u u. N l i v h INVENfOR.

" ATTORNEY.

June 8 1926.

R. C. HASTINGS TELEPHONE SYSTEM '5 sheeissheet 4 Original Filed July 3, 1920 INVENTOR.

ATTORNEY. I

. June 8 ,'1926 1,588,109 r R. C. M. HASTlNGS TELEPHONE SYSTEM 5 Sheets-Sheet 5 Original Filed July 3, 1920 why/m INVENTOR.

.4 TTORNEY.

Pa tented June 8, 1926.

'BUIBEN ojM; HASTINGS, OFCOLUMBTJ'S, on o; ELIZABETH nnnsrmes ExEcU'rmx i h 1,588,109 PATENT OFFIC -i OF THE WILL OF 'SAID RL 0. M. HASTINGS; DECEASED.

TELEPHONE SYSTEM.

. Application med my 3, 1920, Serial No. 393,907.. Renewed a rni'z, 1926.1

I My present invention relates to improvements in telephone systems, one object of the invention being the provision by means of which the battery at the eXch-angeis utilized tooperate the call-up alarm in the substation, thus relieving the system of the great objections :to the call-up alarm .and ringing set now employed at the'exchange and producing a, system which costs considerably 0 less to install, operate, and maintain than at. present. p 7 c A still further object of this invention is theprovision of anovel means located. at the exchange for operating, a step-by-step .m device in the substation whereby the call up alarm is connected to or dis-connected from the line and whereby the call-up alarm is continually rung'without the necessity of a ringiug k ey at the exchange after-the step-.

'20 by-step deviceis operated and as long as the receiver is on the-hook.

A still further, object of this invention is' the'provision of a telephone system having located at'the exchange station means controlled'by the plug and switch to close and open a call alarm circuit at the substation, the alarm in the circuit being operated by the battery or electrical source at the exchange.

With the foregoing and other objects in 3 view 'which will appear as the description proceeds the invention resides in the comblnation and arrangement of parts and 1n the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosedican be made within the scope of what is claimed without departing from the spirit of the invention. In the accompanyingdrawings; v Figurel isa diagrammatic view of an exchange and a substation, with the parts in normalcondition, that is, previous tothe substation .being called. or the substation calling. the exchange. i v Figure 2 's a similar view showing; the

parts in the position they assume during the calling offasubstation.

YFigurejB is a similar view to Figure ,1,

showing the'parts -in the position they as sume during theitalking or after the" called substation has removed the receiver from the hook.

' .Figure 4 is av similar view showingthe posit on the parts assume after the receiver has been returned to'thehook,

, calling position, at which .time the calling lay 9, theconductor 7, the conductors .13 and 14, the conductor 20, the condenser 19, which Figure 5 is a similar view showing, the parts in the position they assume when a subscriber is calling. i

V In describing the present, invention the yarlous steps in operationwill 'b edescribed 1n sequence so thatthe wholenrrangement can be more fully understood. Figure2 Wlll, therefore, be first referred to in that it shows, the system in the position it assumes from the normal position of Figure 1 to the .05

plug 100 has been operated toperformIthe following operationfthatfis, to connect the generator, 1 soas' to operate the step-by-step electro-magnet 17 in thesubstation; The cir- ,5 cult for operating this is closed during the lnsertion'of'the plug 100 atjc'ontact 8 of the jackand the sleeve of the plug. When the plug is inserted and the sleeve 48 engages the contact 8, the relay 9 is energizedthrough' the following circuit, which includes the battery 41, the conductor .42, the contact43,

.the armature 44,.the resistances and 46,

the conductor 47, the sleeve 48, the contact 8,;the relay 9, the'conductor53, the grounds ..;B 54 and 55,.and the conductors 561 and 57.'

Battery is then supplied tothe relay 9, the

circuit thus 7 formed including the alternatlng current generator 1, the conductor 3, the

contact 4, the switch 5, controlled bythe re-- i is impermeable to direct'current but permeable to alternating current,-the conductor 18, the eleotromagnet 17 theconductors 16, 9,0 15, 12 and 2. When the contact 5;; is attracted by the relay 9 it wipes contact 4, thus momentarily closing the generator circuit.

This impulsesent out on'the line during the intermittent engagement and opening of the contacts 4 and 5 fcauses the'electromagnet 17 to be energized sothat the'armamm 35 is-operated to in turn control through the detent carrying member 36 the operating and arresting ratchets and 'pawls 37 and 37 of the step-by-step device, :which in :turn

controls the shaft 38 and thedi'ska39,such disk being provided with the operating ins 39K; This action causes the pin'39 to c ose the contacts 28and 29, which as shown-in full lines in Figure 2,;connects in circuit with theline wires 14 and15, the call-u falarm 22,1theconductor 21 being connects to the conductor 15 so that current from the bat- 'tter y 41 will be'led throughthe conductor 79 the relay 7 8, and the conductor 77, through the calling plug 100, conductors -12, and 21, thecall-up alarm 22, the conductor 23, the contacts 28 and 29, :the conductor 30, the armature switch -31 ,;the:conductors 34, 14 and 13, the calling plug 100, the conductor 76, and the conductor 56 to the ground 55. It will thus be seen that as long as the calling plug is in the socket and the receiver 61 is upon the hook 64, that thexcallup' alarm '22 will be energized from the exchange battery '41. As soon as the receiver is removed trom'the hook and the "hook elevates, the switch24 will -momentarily close thecircuit through the contact '25 and thus the shunt to "the call-up alarm 22 will be closed, as indicated in Figure 3, and inasmuch as the closing of this circuit prevents the' flow of current to pass through the callup alarm 22 the bell 'cannot'rin'g while the receiver is of the hook. This circuit includesthe side of the line 15, the conductor 70', the relay '33, the conductor 32, 'the con- 'duc'tor 26, the contacts 25 and 24, the conductor 27 and the conductor 7 2 to the ground. 'This circuit is closed momentarily and establis hes the holding circuit which includes the conductor70, the relay 33, the conductor 32-, the armature 34, the conductor '71, and

"the "c'onductor'72 to theground. Thearm'ature '31 isattrac'ted at the same time and'the call up alarm circuit'is held open as long as the receiver isfofi the hook. The talking circuit includes, as clearly shown in full "lines in Figure 3, the battery 41, the conductors 57 and '76,the' calling plug 100, the con ductors I3, 14'and167, the inductioncoil '59, the conductor 66, the contact 65, the receiver hook 64, the contact 63, the conductor 62, the receiver 61,-tlie conductor 60, the coil 59,

the conductors58, 15and 12, thecallingplu'g '100, the conductor "77, the coil 78, and the conductor The circuit for controlling the en'ergization of the'cut-ofi' relay52, includes the battery 41, the conductor 42, the contact 43,

the armature 44 held closedby the electro- 'magnet "78, "the resistances 4'5 and 46, :the "conductor 47, the sleeve "contact 48 olthe calling plug 100, the sleeve 49*of the multiple jack'Z'OO,theconductors 50 and 5 1,the cutoil relay 52, the 'conductor"53, the grounds 5'4 and 55, and the conductors "56 and 57. The

exchange station is "provided in ad dition'to the *mechanism lherein set r'torth, with .:the answering Eplugf 101, the: answering ,j-ack or socket" 201, the line' relay "80, the pilot" relay 81 the line pilot' lam-p 8 2,'the"line lamp 83, the supervisory lamps 84and 8'5, and the listeningkey 86;

When "the conversation i's at an-endand thefre'ceiverihas been returnedto thelhook, 1 ns shown'in' Figurel,the'current'will flow ffrom'the battery 4141s indicated infu'll" lines Sothfit although the switch 24" has momenfor conversation.

tarily closed the circuit through "contacts 25,

the armature switch 31 ie-still held open due to theenergization of the electro-magnet 3 3, the withdrawal-ofthe-calling plug 100 again closing the contacts 4 andrt'), by the lie-energization of the relay 9 and the generator 1 'for an :instant is connected to the line to cause the energization of the electro-magnet 17 and '-tl1e--operation 0 i": the step bystep device so that the pins 39" permit the contacts 28 and 29 to open and thus insure "the opening of the shunt that controls the electro'-1nag-net 33 and the call up alarm 22', whileat the same time the contacts 48 and 49cm open,

causing the 'de-energization of the out-ojfl relay 52.

As clearly shown in Figure 5, the heavy line indicates the full'current when the suh- Scriber is calling the exchange and the re ceiver "hook 64 is elevated, the circuit including in this instance, the battery 41,}theconductor 87, the line rela-y'80,=tl'1e conductor 88,

the armature '5, the "conductors 89 and 14,

the telephone set at the'substatio'n, the conductors 58, 15 and '90, the armature switch =91 of the cut-off relay 52, the conductor -5'3, the grounds 54 and 55, and the conductors 56 and '57. 5

The step-by-step mechanism at :the substation includes a device somewhat similar to that shown in my U. S. Patent No. 1*,06'1-,- 286, dated May 13, I913, the-pawl and ratchet construction being similar and 'being dispose-d so that the energizationof the electromagn-et 17 will, move the shaft "3 8 counter clockwise thedistance oii one tooth while the spring will operate the arresting pawl in the opposite direction one f l ooth, the disk 39 only beingpropelled counterclockwise with :the pins 39 arranged so as to close the contacts came 29 upon'o'ne 'e'nergizati'on 'ot the .electroIn-agnet 17 and-being released upon the next energization thereofytha-t is, as'the jack plug is in erted and withdrawn.

I FIOlIl'tllB foregoing descriptiom-itisevident'that with a'telephone systemarrangell according to the above, that the central'battery or electrical" source/oi energy -41"-"can be'so arrangedas *toioperate ..the call-up alarm 22, dispensing with the "expensive ringing set at the switch loo arrl "of the -;exchange and the necessary apparatus for operating the same or operatingin conjunction with same'andt'hat :as long as theifeceiver is upon thehook after the calling plug'l-has been inserted in the socket, t1ie1call upalarni 22 will he energized, the elevatingo'f-the hook cau-sin the deenergization' thereof, ana permitting he subscrilier'to use' 'the wires What I claim as newis: H v

1. A telephone system includifigam-exch ange-"station, aH-ire'ctcurrent-'source therein, a substation, acaill up-alarm in thesubstation, a step-by-step device in the substation, and a switch controlled thereby in circuitwith the call-up alarm, whereby upon the insertion of the plug in the jack at the exchange said switch is closed and the callup alarm is connected direct to thecurrent source.

2. A telephone system including an exchange station, a direct current source therein, a substation, a call-up alarm in the substation, a step-by-step device in the sub station, and a switch controlled thereby in circuit with the call-up alarm, whereby upon the insertion of the plug in the jack at the exchange said switch is closed and the callup alarm is connected direct to the current source, a receiver hook in the substation, a receiver in the substation, an electromagnetically controlled switch at the substation, the electromagnet being normally deenergized when the receiver is upon the hook, said switch'thereof being normally in circuit with the call-up alarm when its electromagnet is ie-energized, and means controlled by the receiver hook for energizing the electromagnet when thehook is elevated to open the call up alarm circuit.

3. A telephone system including an exchange station, a direct current source there-l in, a substation, a call-up alarm in the sub station, a step-by step devicein the substation, and a switch controlled thereby in circuit with the call-up alarm, whereby upon the insertion of the plug in the jack at the exchange said switch is closed and the callup alarm is connected direct to the current.

source, .a receiver hook in the substation, a

receiver in the substation, an electromag netically controlled switch at the substation,

I the electromagnet being normally de-energized when the receiver is upon the hook, said switch thereof being normally in circuit with the call-up alarm when its electromagnet is de-energized, means controlled by the receiver hook for energizing the electroinagnet when thehook is elevated to open the call-up alarm circuit, and means controlled by the receiver hook upon the elevation thereof for connecting the source with'the receiver. i v

4;. A telephone system including an exchange station having a direct and an alternating current source, a step-by-step device at the substation including an alternat I ing current electromagnet, areceiver, areceiver. hook, a call-up alarm,aswitch con-.

trolled by the step-by-step device for con-v meeting the call-up alarm with the direct current source of the exchange station, a

calling plug and a jack at the exchange station, and means controlled thereby during the insertion and withdrawal of the plug for momentarilyjconnecting the alternating current source with the electromagnet of the step-by-step device whereby the switch is opened or closed.

5. A telephone system including an exchange station having a direct and analter- I nating current source, astep-by-step device the call-up alarm circuit and connecting the. "receiver to the direct currentsource at the exchange station.

In testimony whereof I aifix my signature.

RUBEN o; M. HASTINGS. 

